Mechanism for operating variable ratio-gearing.



No. 889,897. PATENTED JUNE 9, 1908. S. BRAMLEY MOORE. MECHANISM FOR OPERATING VARIABLE RATIO GEAR-ING.

APPLICATION FILED D1308, 1906.

2 SHEETS-SHEET 1.

EN VEN TGR. S Brmnlay-Maom PATENTED JUNE 9, 1908.

TIUG AMABLE RATIO GEARl 'NG.

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APPLIGATIUE' FILED 906.

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@NVEN TOR. SB 1' -Moow.

SWINFEN BRAMLEY-MOORE, OF LONDON, ENGLAND.

Specification of Letters Patent.

Patented June 9, 1908..

Application filed. December 8, 1906. Serial No. 346,928.

Bloombury, in the county of London, Eng

land, have invented a new and useful Mechanism for Operating Varlable Ratio- Gearing, oi which the following is a specification.

This invention relates to mechanism for operating velocity ratio gears employed in motor road vehicles in which the various trains of gear wheels are brought into driving operation either by sliding the wheels on their shafts or connecting them to said shafts by means of sliding clutches, and it has for its object obtaining a plurality of changes by means of a single lever which has a fixed and limitedmovcment for each change and avoid ing what is known as passing through the gears.

According to the present invention, two bars are pivoted so as to swing in the horizontal plane and to be capable of moving at any given angle to one another independently of each other, and at any other angle than said angle in unison with one another. Pivoted either below or above these bars is a lever which engages both of thesaid bars. Movement of this lever-horeinafter called the "operating leverin a direction corresponding to the direction of the longitudinal axis of either of the bars while imparting no movement to the said bar imparts a rocking movement to the other bar, and if the operating lever is moved in any other direction it moves both bars sin'iultanoously. A suit ably shaped guide is employed to direct the paths of the operating lever.

in the accompanying drawings which illustrate this invention :Figures 1 .& 2, Sheet No. 1, are views in side elevation and plan respectively. Figs. 3 d; 4, Sheet No.2, are views in elevation and plan respectivclyon an enlarged scale-of the mechanism shown in Figs. 1 & 2, and Fig. 5 is a view in plan of the guide for the operating lever.

'lhroughout the views similar parts are .marked with like letters of reference.

Referring to Figs. 1, 2, 3, 4. &. 5. The two bars B and B are mounted to rock in the horizontal plane on suitably arranged pivots D and their free ends are iitted with eyes I) with which the operating lever A engages, the said lever being pivotedat a: in any con: vcnient position above the two bars. To

.movement to the other of the two bars.

enablethe one bar to be rocked on its pivot without moving the other the ends of the with which the lever A engages are so con structed as to permit said lever being moved in the direction of the longitudinal axis of either of the bars without transmitting any J 'i convenient method of doing this is to make the bars B and B telescopic in length as shown, so that when the lever A. is moved, say, in the direction of the longitudinal axis of the bar B it imparts practically no move ment to said bar and at the same time causes the bar B to swing on its pivot, and said lever is moved in a direc ion which does not correspond with the longitudinal. of either of the bars, such for instance as diagonally with respect to the two bars, it causes both said bars to swing on their respective pivots. The motion may be taken oi? the bars B and B either directly or from exten-- sions such as B and B as shown.

The guide for the operating lever consists of a )late 0 in which are slots'c arranged according to the number of movements re quired. Figs. 2 and 5 show a guide-plate with eight radial slots for allowing eight inc ments of the operating lever' it will nnderstood that when simultaneous motion of two selective striking rods is required the direction of the path of the operating lever will not coincide with the longitudinal axis of either of the bars, and that the relative amount of movement imparted to each of the bars will depend on the an 'le'the path of the operating lever makes wit reference to the paths of the moving bars.

The operating lever is retained in its central or neutral position and in its operative positions by any suitable device, such for instance as that now commonly used in vcloc- 'ity ratio gears 01" the type to which this invention relates, viz. by spring controlled iingers carried by the gear box which engage notches in the selective striking rods.

- The movements of the two bars B 8; B are imparted to the selective striking rods of a ,velocity ratio gear either directly or indirectly by means of suitable coupling devices. What I claim and desire to secure by Let ters Patent of the United States is 1. Mechanism for operating the velocity. ratio gearlng of motor road vehicles comprising two bars pivoted so as to swing in the same plane, extensions of said bars shdmg 1n hxed relation to the said bars, a pivoted opsaid extensions,

BEST manners COPY erating, lever engaging the free ends of the and a slotted plate adapted to act as a guide for the operating lever as set set forth.

forth. I In testimony whereof I have signed my 15 2. In operating mechanism for velocity name to this specification inthe presence of {)atio gearilfig of ngotor road vehieles the comtwo subscribing Witnesses. I

ination 0 two ars pivots so as to swing T 1 n I g a 7 in the same plane, telescopic extensions of BRAMLIQQWOORE' W'i tnesses ROBERT E. Pm irrs G. V, SYMEs.

movement thereof, and a slotted plate adapted to act as a guide for the operating lever as said bars, a lvoted o erating lever engaging the free en s ol sai teleseopic extensions,

rigid extensions of said bars to transmit the I 

